#1F589B#1F589B

#1F589B is a mid, vivid cyan. Relative luminance 0.096; OKLCH L 46.0% C 0.124 H 254.9°. Best body text is #FFFFFF at 7.17:1 contrast (WCAG AA passes).

Color values

HEX	#1F589B
RGB	rgb(31, 88, 155)
HSL	hsl(212, 67%, 36%)
HSV	hsv(212, 80%, 61%)
CMYK	cmyk(80%, 43.2%, 0%, 39.2%)
CIE-LAB	lab(37.18, 6.57, -41.75)
CIE-LCH	lch(37.18, 42.26, 278.94°)
OKLab	oklab(46% -0.0323 -0.1195)
OKLCH	oklch(46% 0.124 254.9)
XYZ	xyz(9.9690, 9.6361, 32.3385)
Luminance	0.0964 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F589B #9B621F

analogous

#1F969B #1F589B #241F9B

triadic

#1F589B #9B1F58 #589B1F

tetradic

#1F589B #9B1F96 #9B621F #1F9B24

square

#1F589B #9B1F96 #9B621F #1F9B24

split-complementary

#1F589B #9B241F #969B1F

monochromatic

#0B1E35 #153B68 #1F589B #2975CE #5795DD

Accessibility & contrast

On white

7.17

#1F589B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#1F589B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F589B

7.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F589B	#FFFFFF	#000000	##FFFFFF
##1F589B	1.00	7.17	2.93	7.17
#FFFFFF	7.17	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#375E9E

Deuteranopia (green-blind)

#20529A

Tritanopia (blue-blind)

#006872

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1f589b;
/* rgb */ color: rgb(31, 88, 155);
/* oklch */ color: oklch(46.0% 0.124 254.9);

Tailwind

colors: {
  custom: {
    50: '#6f86b9',
    500: '#1f589b',
    950: '#000000',
  },
}

SCSS

$custom: #1f589b;
$custom-light: #6f86b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f589b",
  "rgb": {
    "r": 31,
    "g": 88,
    "b": 155
  },
  "hsl": {
    "h": 212.419,
    "s": 66.667,
    "l": 36.471
  },
  "oklch": {
    "l": 0.46003,
    "c": 0.12381,
    "h": 254.9
  },
  "luminance": 0.09637
}

Semantic roles & 50–950 ramp

primary

#1F589B

secondary

#C18F55

accent

#9B3EEA

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080B11

muted

#7B7C80

Preview Lab

Preview with #1F589B

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →